This patch will add support for OTG host initialization. This will
help OTG drivers to populate their host subsystem.
Signed-off-by: Manish Narani <mnarani@xxxxxxxxxx>
---
drivers/usb/host/xhci-plat.c | 35 +++++++++++++++++++++++++++++++++++
1 files changed, 35 insertions(+), 0 deletions(-)
diff --git a/drivers/usb/host/xhci-plat.c b/drivers/usb/host/xhci-plat.c
index ddfab30..b4cadbd 100644
--- a/drivers/usb/host/xhci-plat.c
+++ b/drivers/usb/host/xhci-plat.c
@@ -20,6 +20,10 @@
#include <linux/slab.h>
#include <linux/acpi.h>
+#ifdef CONFIG_USB_OTG
+#include <linux/usb/otg.h>
+#endif
+
#include "xhci.h"
#include "xhci-plat.h"
#include "xhci-mvebu.h"
@@ -255,6 +259,24 @@ static int xhci_plat_probe(struct platform_device *pdev)
if (ret)
goto dealloc_usb2_hcd;
+#ifdef CONFIG_USB_OTG
+ hcd->usb_phy = usb_get_phy(USB_PHY_TYPE_USB3);
+ if (!IS_ERR_OR_NULL(hcd->usb_phy) && hcd->usb_phy->otg) {
+ dev_dbg(&pdev->dev, "%s otg support available\n", __func__);
+ ret = otg_set_host(hcd->usb_phy->otg, &hcd->self);
+ if (ret) {
+ dev_err(&pdev->dev, "%s otg_set_host failed\n",
+ __func__);
+ usb_put_phy(hcd->usb_phy);
+ hcd->usb_phy = NULL;
+ goto dealloc_usb2_hcd;
+ }
+ } else {
+ usb_put_phy(hcd->usb_phy);
+ hcd->usb_phy = NULL;
+ }
+#endif
+
return 0;
@@ -283,6 +305,19 @@ static int xhci_plat_remove(struct platform_device *dev)
struct xhci_hcd *xhci = hcd_to_xhci(hcd);
struct clk *clk = xhci->clk;
+#ifdef CONFIG_USB_OTG
+ if (hcd->usb_phy) {
+ if (!IS_ERR(hcd->usb_phy)) {
+ if (hcd->usb_phy->otg)
+ otg_set_host(hcd->usb_phy->otg, NULL);
+ usb_put_phy(hcd->usb_phy);
+ }
+ hcd->usb_phy = NULL;
+ if (xhci->shared_hcd)
+ xhci->shared_hcd->usb_phy = NULL;
+ }
+#endif
+
usb_remove_hcd(xhci->shared_hcd);
usb_phy_shutdown(hcd->usb_phy);
--
1.7.1
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